spec(hakugyokurou): initial configuration

spec/hakugyokurou/jovian.nix

@@ -0,0 +1,93 @@
+{ pkgs, lib, config, jovian, ... }: with lib; {
+  specialisation.steamos.configuration = {
+    jovian = {
+      hardware.has.amd.gpu = true;
+      steamos.useSteamOSConfig = true;
+      steamos.enableDefaultCmdlineConfig = false;
+
+      steam = {
+        enable = true;
+        autoStart = true;
+        desktopSession = "plasma";
+        user = "app";
+      };
+    };
+
+    users.home.persistApp.directories = [
+      ".steam" ".local/share/Steam"
+      ".config/gamescope" ".config/hhd"
+      ".kodi"
+    ];
+
+    users.users.app.extraGroups = [ "networkmanager" "gamemode" ];
+    programs.gamemode.enable = true;
+    programs.regreet.enable = false;
+    home.plasma.enable = true;
+    home.plasma.extraConfig = {
+      configFile = {
+        kwinrc.Xwayland.Scale = 1.75;
+        kscreenlockerrc.Daemon.Autolock = false;
+      };
+    };
+
+    home-manager.users.app = {
+      home.packages = with pkgs; [
+        (pkgs.kodi-wayland.passthru.withPackages (kodiPkgs: with kodiPkgs; [
+          joystick # keymap steam-controller
+          #controller-topology-project
+          libretro libretro-2048
+          libretro-fuse libretro-genplus libretro-mgba
+          libretro-nestopia libretro-snes9x
+          jellycon
+        ]))
+      ];
+
+      home.pointerCursor = {
+        package = pkgs.steamdeck-hw-theme;
+        name = "steam";
+      };
+    };
+
+    services.handheld-daemon = {
+      enable = true;
+      user = "app";
+    };
+
+    jovian.decky-loader = {
+      # ~/.steam/steam/.cef-enable-remote-debugging
+      enable = true;
+      user = "app";
+      extraPackages = with pkgs; [
+        curl unzip util-linux gnugrep procps pciutils kmod ryzenadj
+      ];
+      extraPythonPackages = pythonPackages: with pythonPackages; [
+        hid pyyaml
+      ];
+      stateDir = "/nix/persist/decky";
+    };
+
+    boot.kernelParams = [
+      "iomem=relaxed"
+      "amd_pstate=passive"
+    ];
+    boot.plymouth.themePackages = [ pkgs.steamdeck-hw-theme ];
+    boot.plymouth.theme = "steamos";
+
+    services.udev.extraRules = ''
+      SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="${pkgs.ryzenadj}/bin/ryzenadj --max-performance"
+    '';
+
+    nixpkgs.overlays = [ (final: prev: {
+      gamescope = prev.gamescope.overrideAttrs (finalAttrs: previousAttrs: {
+        postInstall = previousAttrs.postInstall + "\n" + ''
+          wrapProgram "$out/bin/gamescope" \
+            --append-flags "--force-orientation left"
+        '';
+      });
+    }) ];
+  };
+
+  imports = [
+    jovian.nixosModules.jovian
+  ];
+}